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Thread: i can't boot from installation cd/usb

  1. #1
    Join Date
    Nov 2010
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    Unhappy i can't boot from installation cd/usb

    hi, i have just downloaded ubuntu 10.10 32bit, made a bootable cd and tried to boot from it but with no success.

    when i restart my computer with cd in the tray i can't get to the installation screen, it simply won't boot from my cd(like my cd is not bootable). Same thing using bootable usb(followed the steps provided on ubuntu.com)

    i have changed boot order(cdrom first,hdd second) but same thing.

    any ideas? thanks

  2. #2
    Join Date
    Feb 2008
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    Ubuntu 13.04 Raring Ringtail

    Re: i can't boot from installation cd/usb

    when i restart my computer with cd in the tray i can't get to the installation screen, it simply won't boot from my cd(like my cd is not bootable). Same thing using bootable usb(followed the steps provided on ubuntu.com)
    So is it skipping the CD boot and going straight to your regular OS (assuming Windows) or is it giving you some kind of error without moving any further?

    Assuming it's the latter and you have extra CDs, you might take these steps:

    1. Verify the image you downloaded if you haven't already.
    2. burn a new CD and try again
    3. if you are able to get the CD to boot, press a key when it starts to boot and select the "check disk for errors" option

    You might also consider the alternate CD if you're unable to boot into the regular one.
    yeats - Ubuntu 13.04

  3. #3
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    Re: i can't boot from installation cd/usb

    It's the first one, it simply skips the boot cd and goes straight to windows( windows 7).

  4. #4
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    Re: i can't boot from installation cd/usb

    did you set up your bios to look for a bootable cd, before it boots from harddrive? depending on your machine, pressing CTRL+F12 at boot could also take you to a menu where you can choose to boot from cd.

    just to be sure, you did burn image-to-disk, and not just put the *.iso file on a cd? silly mistake, but i managed to make that mistake back at 8:10

  5. #5
    Join Date
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    Re: i can't boot from installation cd/usb

    Hi,

    I have several computers which don't support USB boot. I can however by using Plop boot manager.

    Just try their instructions.

    http://www.plop.at/en/bootmanager.html

    It worked like a charm for me.

    Good luck!

  6. #6
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    Re: i can't boot from installation cd/usb

    Quote Originally Posted by Hashiru View Post
    Hi,

    I have several computers which don't support USB boot. I can however by using Plop boot manager.

    Just try their instructions.

    http://www.plop.at/en/bootmanager.html

    It worked like a charm for me.

    Good luck!
    my bios has the option to boot from flash drive.

    Quote Originally Posted by Yougo View Post
    did you set up your bios to look for a bootable cd, before it boots from harddrive? depending on your machine, pressing CTRL+F12 at boot could also take you to a menu where you can choose to boot from cd.

    just to be sure, you did burn image-to-disk, and not just put the *.iso file on a cd? silly mistake, but i managed to make that mistake back at 8:10

    i have set boot order from bios(cd,hdd). i have no problem booting from other operating systems cd. I also checked my cd, it works fine under windows( i get that installation screen)
    Last edited by Kmunky; November 3rd, 2010 at 12:07 PM.

  7. #7
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    Re: i can't boot from installation cd/usb

    is it possible to check the cd for errors from a wubi installation (like you can with a boot-from-cd)? even if the cd checksum is good, some files may be broken, preventing the cd from being bootable

    other than that, and i'm out of ideas :-\

  8. #8
    Join Date
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    Re: i can't boot from installation cd/usb

    The reason why I posted Plop boot manager is that I could not start ubuntu from the cd. The cd worked at laptops though. Since it couldn't be the cd I tried a different approach.
    I installed Plop boot manager on a cd and installed ubuntu from usb. A little bit of a work-a-round, but it worked.

    I don't know if it will work in your situation, but if you run out of ideas, it might be worth a try.

  9. #9
    Join Date
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    Xubuntu 12.04 Precise Pangolin

    Re: i can't boot from installation cd/usb

    I often find that bios on MOBO are faulty POS. Even when I set boot order often it will not boot in the order I have set, this is why I have started just hitting F10 (boot options) for my MOBO. Then I get a screen asking me which device to boot from and that works.

    In fact just last night I had a friend who couldn't get his computer to boot from a Windows 7 install DVD that was turned into an .iso and put on a bootable USB stick. However, when he went to boot options and told it to boot from a USB, not trusting his changed boot order to work, it did.

    So, try that, I think it is worth a shot before more trouble shooting.

    AlphaA
    "Si Dieu n'existait pas, il faudrait l'inventer" -Voltaire

  10. #10
    anewguy is offline I Ubuntu, Therefore, I Am
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    Wink Re: i can't boot from installation cd/usb

    Here's something simple to check -

    (1) did you burn the CD as burning an ISO, or did you just copy the ISO to it? If all you did was copy, it won't boot, you need to burn it as an ISO.

    (2) the same holds true for USB - you can't just copy the file to it. Use something like netbootln (spelling?) to create the bootable USB image.


    Dave

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